Abstract: Provided is a sample container which is for use with an X-ray fluorescence analyzer and which permits measurement of light elements in a liquid. The sample container includes a sealable first receptacle, a pressure adjusting valve for adjusting the pressure in the first receptacle, a second receptacle receiving a liquid sample (S) and having both a first opening and a second opening located inside and outside, respectively, of the first receptacle, and an analytical film closing off the second opening and transmitting X-rays.

Abstract: There is provided a radiation detection apparatus capable of effectively discriminating between noise and X-ray signal. The radiation detection apparatus includes a detector for detecting radiation and producing a detector output signal, a first differential filter having a time constant and operative to differentiate and convert the detector output signal into a first pulsed signal, a second differential filter having a time constant greater than that of the first differential filter and operative to differentiate and convert the detector output signal into a second pulsed signal, and a noise detection section for detecting noise based on the difference in timing between peaks of the first and second pulsed signals.

Abstract: An X-ray fluorescence measurement apparatus has a sample tank, and a measurement unit that has an X-ray generator and an X-ray fluorescence detector. A film mechanism takes out a used film from a partitioning position between the sample tank and the measurement unit in a slide direction which intersects a direction of arrangement of the sample tank and the measurement unit, and feeds an unused film portion to the partitioning position in the slide direction. The film portions may alternatively be exchanged using cassettes.

Abstract: An analysis method using an X-ray fluorescence analyzer is provided in which an X-ray spectrum is acquired by detecting a secondary X-ray emitted from a specimen when the specimen is irradiated with a primary X-ray. The analysis method includes: acquiring a first X-ray spectrum obtained, with a take-off angle of the secondary X-ray being set as a first take-off angle; acquiring a second X-ray spectrum obtained, with a take-off angle of the secondary X-ray being set as a second take-off angle that is different from the first take-off angle; and obtaining information on an element in a depth direction of a specimen based on the first X-ray spectrum and the second X-ray spectrum.

Abstract: An analysis method using an X-ray fluorescence analyzer is provided in which an X-ray spectrum is acquired by detecting a secondary X-ray emitted from a specimen when the specimen is irradiated with a primary X-ray. The analysis method includes: acquiring a first X-ray spectrum obtained, with a take-off angle of the secondary X-ray being set as a first take-off angle; acquiring a second X-ray spectrum obtained, with a take-off angle of the secondary X-ray being set as a second take-off angle that is different from the first take-off angle; and obtaining information on an element in a depth direction of a specimen based on the first X-ray spectrum and the second X-ray spectrum.

Abstract: An X-ray fluorescence measurement apparatus has a sample tank, and a measurement unit that has an X-ray generator and an X-ray fluorescence detector. A film mechanism takes out a used film from a partitioning position between the sample tank and the measurement unit in a slide direction which intersects a direction of arrangement of the sample tank and the measurement unit, and feeds an unused film portion to the partitioning position in the slide direction. The film portions may alternatively be exchanged using cassettes.

Abstract: An opening is formed on a horizontal plate. A center of the opening coincides with a center of an X-ray passage area. A line-shaped member for calibration is provided passing the center of the opening. When an X-ray is irradiated onto a sample, an X-ray fluorescence from the sample and an X-ray fluorescence from the line-shaped member are detected at an X-ray detector. An X-ray spectrum produced by this detection includes a reference peak corresponding to the X-ray fluorescence from the line-shaped member, and energy calibration or the like is executed based on the reference peak.

Abstract: A radiation detector is offered which can suppress generation of sum peaks.

Abstract: An X-ray spectrometer (100) capable of reducing the effects of noises includes: an X-ray detector (110) outputting a staircase waveform (S110); a first differential filter (120) converting the staircase waveform (S110) into a first pulsed signal (S120); an event detection portion (140) detecting whether the first pulsed signal (S120) has exceeded a threshold value; a noise event detection portion (150) determining whether the first pulsed signal (S120) in excess of the threshold value is shorter than a given time; a second differential filter (160) converting the staircase waveform (S110) into a second pulsed signal (S160) having peaks whose heights correspond to the heights of the steps of the staircase waveform; a maximum value detection portion (170) detecting pulsed signal (S160) if the first pulsed signal (S120) exceeds a threshold value; and a decision portion (180) making a decision based on the noise event detection portion (150).

Abstract: An X-ray spectrometer (100) capable of reducing the effects of noises includes: an X-ray detector (110) outputting a staircase waveform (S110); a first differential filter (120) converting the staircase waveform (S110) into a first pulsed signal (S120); an event detection portion (140) detecting whether the first pulsed signal (S120) has exceeded a threshold value; a noise event detection portion (150) determining whether the first pulsed signal (S120) in excess of the threshold value is shorter than a given time; a second differential filter (160) converting the staircase waveform (S110) into a second pulsed signal (S160) having peaks whose heights correspond to the heights of the steps of the staircase waveform; a maximum value detection portion (170) detecting pulsed signal (S160) if the first pulsed signal (S120) exceeds a threshold value; and a decision portion (180) making a decision based on the noise event detection portion (150).

Abstract: A radiation detector is offered which can suppress generation of sum peaks.